Hi.

I am attaching updated patches 4 and 5.
Unfold now works, and top-cap is painted when there is no rotation (transparent cube, zoom).

Remaining problems are:
- checkFTB sometimes doesn't work for inside cube.
- 2 sided inside cube looks very bad (not exactly a bug, because this is probably how it should work, but it still looks pretty bad).
- 2 sided cube: what should the clip-planes be? the current clip-planes are broken (try setting inactive opacity and minimize a window). But I don't know what the correct clip-planes for 2 sided cube should be. Maybe 2 sided cube shouldn't even have clip-planes?

Also, there is another bug, that was there before my patches: caps are painted wrong when inside cube and != 4 faces. Would be nice to fix that.

Thanks,
Roi.